Podcast
Play an AI-generated podcast conversation about this lesson
Questions and Answers
What is the equation of the regression line relating the number of hours watching TV (x) to the test score (y)?
What is the equation of the regression line relating the number of hours watching TV (x) to the test score (y)?
- y = -4.07x - 93.97
- ŷ = 4.07x - 93.97
- ŷ = -4.07x + 93.97 (correct)
- y = 4.07x + 93.97
What is the predicted test score for a student who watches 9 hours of TV over the weekend?
What is the predicted test score for a student who watches 9 hours of TV over the weekend?
- 84.6
- 76.56
- 66.63
- 57.34 (correct)
What is the slope of the regression line?
What is the slope of the regression line?
- 93.97
- -4.07 (correct)
- 4.07
- -93.97
What does the y-intercept of 93.97 represent?
What does the y-intercept of 93.97 represent?
Signup and view all the answers
What does a negative slope indicate about the relationship between TV hours and test scores?
What does a negative slope indicate about the relationship between TV hours and test scores?
Signup and view all the answers
Which of the following points lies on the regression line?
Which of the following points lies on the regression line?
Signup and view all the answers
What is the coefficient of determination (r^2) for this regression?
What is the coefficient of determination (r^2) for this regression?
Signup and view all the answers
If the number of data points increased, what would happen to the regression line?
If the number of data points increased, what would happen to the regression line?
Signup and view all the answers
What assumption is made when using linear regression?
What assumption is made when using linear regression?
Signup and view all the answers
Which of the following values is an outlier in the given data?
Which of the following values is an outlier in the given data?
Signup and view all the answers
